Talk:Write Blockers

How are they more valuable than mount -o ro?

To add value, wouldn't a write-blocker need to be infallible, then *proven* to be infallible? (That is, proven to be as such, within the margin demonstrated by proving compliance with RTCA/DO-178B using Criticality Level 1). johnc 17:49, 28 December 2011 (PST)